2 Replies Latest reply on Jun 29, 2009 12:38 AM by karthikm

    Source Names That Appear On More Than One Object


      i am getting following error in LVS report


        5    ** missing net **                                        VDD


        6    ** missing net **                                        VSS

                                        INCORRECT PORTS

      DISC#  LAYOUT NAME                                              SOURCE NAME

        7    ** missing port **                                        VDD on net: VDD
        8    ** missing port **                                        VSS on net: VSS


      and it is showing in detailed report LVS REPORT OPTION


        --- Devices on source net VSS ---

            (cell ports)                                              (cell ports)
              VDD_PLL: VDD_PLL                                          VDD_PLL: VDD_PLL
              VDDA_PLL: VDDA_PLL                                        VDDA_PLL: VDDA_PLL
              VDD: VDD                                                  VDD: VDD
              VDD_MDDI: VDD_MDDI                                        VDD_MDDI: VDD_MDDI
              VDDA_MDDI: VDDA_MDDI                                      VDDA_MDDI: VDDA_MDDI
              VCCQ: VCCQ                                                VCCQ: VCCQ
              vddz: VDDZ                                                vddz: VDDZ
              vddana: VDDANA                                            vddana: VDDANA
              VSS: VSS                                                  VSS: VSS
              VSSA_MDDI: VSSA_MDDI                                      VSSA_MDDI: VSSA_MDDI
              VSS_PLL: VSS_PLL                                          VSS_PLL: VSS_PLL
              VSSA_PLL: VSSA_PLL                                        VSSA_PLL: VSSA_PLL
              VSS_MDDI: VSS_MDDI                                        VSS_MDDI: VSS_MDDI
              vccio_2_: vccio_2_                                        vccio_2_: VCCIO_2_
              gpio_57: gpio_57                                          gpio_57: gpio_57
              vpp6: vpp6                                                vpp6: vpp6
              mddi_d0_n: mddi_d0_n                                      mddi_d0_n: mddi_d0_n




              adq0_2_8m_ad7_2_16m: adq0_2_8m_ad7_2_16m                  adq0_2_8m_ad7_2_16m: adq0_2_8m_ad7_2_16m
              adq1_2_8m_ad6_2_16m: adq1_2_8m_ad6_2_16m                  adq1_2_8m_ad6_2_16m: adq1_2_8m_ad6_2_16m
              adq1_1_8m_ad6_1_16m: adq1_1_8m_ad6_1_16m                  adq1_1_8m_ad6_1_16m: adq1_1_8m_ad6_1_16m
              ** missing net **                                                      VDD: VDD
              ** missing net **                                                      VSS: VSS



      also showimg


      Source Names That Appear On More Than One Object:

         Ports:        VDD VSS
         Nets:         VDD VSS


      can any one please explain why the tool showing 2 VDD & 2 VSS in source net list